package day03;

public class IFdemo {
    public static void main(String[] args) {
        double price = 299.0;
        if(price>=500){
            price*=0.7;
        }else if(price>=300){
            price*=0.9;
        }else{
            price*=0.95;
        }
        System.out.println("最终结算金额："+price);

        int score = 87;
        if(score>=0&&score<=100){
            System.out.println(score+"是合法成绩");
        }else{
            System.out.println(score+"不是合法成绩");
        }

    }
}
